Genesis 2 - ESV

So God blessed the seventh day and made it holy, because on it God rested from all his work that he had done in creation.

Then the Lord God said, “It is not good that the man should be alone; I will make him a helper fit for him.”

And the rib that the Lord God had taken from the man he made into a woman and brought her to the man. Then the man said, “This at last is bone of my bones and flesh of my flesh; she shall be called Woman, because she was taken out of Man.” Therefore a man shall leave his father and his mother and hold fast to his wife, and they shall become one flesh.